Comparison guide
BKC 50% vs BKC 80% — Which Benzalkonium Chloride Should You Buy?
A side-by-side decision guide for disinfectant brands, sanitiser blenders, cosmetic preservation houses, and water-treatment formulators choosing between Benzalkonium Chloride 50% and 80% concentrate. Same active substance (ADBAC, CAS 8001-54-5) — different concentrations, freight economics, and storage requirements.
Quick Side-by-Side
| Attribute | BKC 50% | BKC 80% |
|---|---|---|
| Active matter | 50 ± 1% | 80 ± 1% |
| Active substance | Alkyl Dimethyl Benzyl Ammonium Chloride (ADBAC), CAS 8001-54-5 — identical | |
| Form / viscosity | Clear pale yellow liquid (free-flowing) | Pale yellow viscous liquid (gel below 15°C) |
| Storage temperature | 5 – 40°C | 15 – 40°C (heated storage in cold climates) |
| Freight per kg active | Baseline (50% water) | ~37% lower than BKC 50% |
| Best for | Direct formulation, regional supply, room-temp pumping | Bulk export, on-site dilution, freight-economic concentrate |
| Lonza brand equivalent | Bardac® 22, Hyamine® 3500 | Bardac® 2280 |
| Stepan brand equivalent | BTC® 824, BTC® 50NF | BTC® 8358 |
| Nouryon brand equivalent | Maquat® MC 1412 | Maquat® 4480-E |
| Vasudev SKU | VCP-SFC-0005 | VCP-SFC-0006 |
When to Buy BKC 50%
BKC 50% is the global formulation reference standard — used directly in finished disinfectant formulations without dilution. Choose BKC 50% if you fall into one of these profiles:
- Regional sanitiser blender producing finished disinfectants for local domestic market — the active concentration matches your formulation manuals and you don't want to manage on-site dilution.
- Hospital/clinical disinfectant formulator following EPA-registered formulation specifications based on Lonza Bardac® 22, Stepan BTC® 824, or equivalent 50% reference grades.
- Cold-climate operations (Russia, northern Europe, northern China) where BKC 80% gelation requires heated warehousing — BKC 50% remains free-flowing at 5°C.
- Small-scale formulators or new-product developers running pilot batches without on-site dilution infrastructure.
- Pharmaceutical preservation OEM diluting to 0.001% – 0.01% active in finished product — easier to meter accurately from a lower-concentration base.
When to Buy BKC 80%
BKC 80% is the export-economical concentrate — preferred by global disinfectant brands and sanitiser blenders who dilute on-site. Choose BKC 80% if you fall into one of these profiles:
- Global disinfectant brand or sanitiser blender procuring active matter from India for export to Latin America, Africa, Middle East, or Asia — freight saving on 80% over 50% is significant.
- EPA-registered formulator who blends concentrate with surfactants, fragrances, and dyes on-site — you have the dilution and metering infrastructure to handle 80% concentrate.
- Cosmetic ingredient formulator producing finished personal-care products — diluting from 80% gives better cost-per-kg-active economics for small inclusion levels (0.05% – 0.1%).
- Water-treatment chemical company producing pool algicide concentrates and cooling-tower biocide slug-dose products — finished products typically contain 10% – 50% active matter.
- Your facility has heated warehousing (above 15°C) or operates in a temperate-to-tropical climate where gelation is not a concern.
Freight Cost Calculator
For an order of 10 MT of active matter (active quat as ADBAC):
- BKC 50%: requires 20 MT of shipped product (10 / 0.50) — full container shipment
- BKC 80%: requires 12.5 MT of shipped product (10 / 0.80) — partial container or LCL
- Saving: 7.5 MT of shipped weight (37.5% reduction)
Typical ocean freight savings:
- India → USA (Houston): USD 1,200 – 1,800 saving per 10 MT order
- India → Brazil (Santos): USD 1,500 – 2,200 saving per 10 MT order
- India → UAE (Jebel Ali): USD 400 – 700 saving per 10 MT order
- India → Vietnam (Ho Chi Minh): USD 600 – 1,000 saving per 10 MT order
- India → Russia (St Petersburg): USD 1,000 – 1,500 saving per 10 MT order
Dilution Reference: Making BKC 50% from BKC 80%
The on-site dilution math is straightforward. To make 100 kg of BKC 50% from BKC 80%:
Target: 100 kg × 50% = 50 kg active matter Source: 50 kg ÷ 0.80 (active fraction) = 62.5 kg BKC 80% Water: 100 kg − 62.5 kg = 37.5 kg demineralised water Result: 62.5 kg BKC 80% + 37.5 kg DI water → 100 kg BKC 50%
Always add BKC 80% concentrate to water (not water to concentrate). Use demineralised or low-hardness water to avoid Ca/Mg precipitation. Gently warm BKC 80% to 25 – 30°C if it has gelled. Validate the final active content by titration (BS EN 16370 or USP <081>) before commercial use.
Frequently Asked Questions
What is the main difference between BKC 50% and BKC 80%?+
Same active substance (Alkyl Dimethyl Benzyl Ammonium Chloride / ADBAC, CAS 8001-54-5) at different concentrations in water. BKC 50% contains 50% active matter, BKC 80% contains 80% active matter. BKC 80% delivers 60% more active per kg of shipped product, saving roughly 37% freight cost per kilogram of active matter.
Which grade should disinfectant manufacturers buy — 50% or 80%?+
Buy BKC 80% if you ship internationally, dilute on-site, or want lower freight cost per kg of active. Buy BKC 50% if you formulate as-is, pump directly through metering equipment at room temperature, or want the global formulation reference standard. Most large export buyers procure 80% concentrate; small regional formulators often prefer 50% liquid.
How do I dilute BKC 80% to make BKC 50%?+
Blend 62.5 kg of BKC 80% with 37.5 kg of demineralised water (mass ratio) to yield 100 kg of BKC 50%. Always add concentrate to water (not water to concentrate) and use demineralised or low-hardness water to avoid Ca/Mg precipitation. Gently warm BKC 80% to 25 – 30°C if it has gelled before dilution.
Why is BKC 80% more viscous than BKC 50%?+
Higher active matter (80% vs 50%) means more cationic surfactant + less water — which raises viscosity. Below 15°C, BKC 80% can form a soft gel that takes time to redissolve. BKC 50% remains free-flowing at room temperature and is easier to pump through metering equipment without warming.
Are BKC 50% and BKC 80% equivalent to Lonza Bardac® or Stepan BTC®?+
Yes. Vasudev Chemo Pharma's BKC 50% is functionally equivalent to Lonza Bardac® 22 / Stepan BTC® 824 / Nouryon Maquat® MC 1412. Our BKC 80% is functionally equivalent to Lonza Bardac® 2280 / Stepan BTC® 8358 / Nouryon Maquat® 4480-E / Pilot Lonzabac® 80%. Same active substance (ADBAC, CAS 8001-54-5) and same C₁₂–C₁₆ alkyl distribution.
What is the freight cost saving when buying BKC 80% instead of BKC 50%?+
For an order of 10 MT of active quat: BKC 50% requires 20 MT of shipped product (10/0.5); BKC 80% requires 12.5 MT (10/0.8). The 7.5 MT freight saving per order is significant — typically USD 600 – 1,500 saving on ocean freight to Latin America or West Africa, or USD 300 – 700 on Middle East shipments. On long-haul ocean shipments, the freight saving alone can pay for the price differential within 1 – 2 orders.
Does BKC 50% have a lower shelf life than BKC 80%?+
No. Both grades have a 24-month shelf life in original sealed HDPE drums when stored at recommended temperatures. BKC 50% should be stored at 5 – 40°C; BKC 80% should be stored at 15 – 40°C (gelation prevention). Stored within these ranges, both grades remain stable and do not lose biocidal activity.
Can I use BKC 80% directly without diluting it?+
No — BKC 80% is highly corrosive and concentrated. Always dilute BKC 80% to use concentration before application. For surface disinfection, dilute to 0.1% – 0.4% active quat (1.25 – 5 g BKC 80% per litre water). For food-contact no-rinse, dilute to maximum 200 ppm active. Direct contact with BKC 80% causes severe skin burns and eye damage.
Ready to Order BKC 50% or BKC 80%?
Vasudev Chemo Pharma supplies Benzalkonium Chloride 50% and 80% direct from our ISO 9001:2015, GMP, and Halal certified facility in Gujarat, India — to disinfectant manufacturers, sanitiser blenders, cosmetic preservation houses, and water-treatment chemical companies across 30+ countries.